KR100999906B1 - 초점 조절장치 및 그것을 이용한 광학 기기 - Google Patents

초점 조절장치 및 그것을 이용한 광학 기기 Download PDF

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Publication number
KR100999906B1
KR100999906B1 KR1020090004483A KR20090004483A KR100999906B1 KR 100999906 B1 KR100999906 B1 KR 100999906B1 KR 1020090004483 A KR1020090004483 A KR 1020090004483A KR 20090004483 A KR20090004483 A KR 20090004483A KR 100999906 B1 KR100999906 B1 KR 100999906B1
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KR
South Korea
Prior art keywords
optical member
focus
contrast value
mode
motor
Prior art date
Application number
KR1020090004483A
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English (en)
Korean (ko)
Other versions
KR20090082118A (ko
Inventor
히로무 야스다
코우스케 키야무라
치카라 아오시마
Original Assignee
캐논 가부시끼가이샤
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Application filed by 캐논 가부시끼가이샤 filed Critical 캐논 가부시끼가이샤
Publication of KR20090082118A publication Critical patent/KR20090082118A/ko
Application granted granted Critical
Publication of KR100999906B1 publication Critical patent/KR100999906B1/ko

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/28—Systems for automatic generation of focusing signals
    • G02B7/36—Systems for automatic generation of focusing signals using image sharpness techniques, e.g. image processing techniques for generating autofocus signals
    • G02B7/38—Systems for automatic generation of focusing signals using image sharpness techniques, e.g. image processing techniques for generating autofocus signals measured at different points on the optical axis, e.g. focussing on two or more planes and comparing image data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/60—Control of cameras or camera modules
    • H04N23/67—Focus control based on electronic image sensor signals
    • H04N23/673—Focus control based on electronic image sensor signals based on contrast or high frequency components of image signals, e.g. hill climbing method

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Automatic Focus Adjustment (AREA)
  • Studio Devices (AREA)
  • Lens Barrels (AREA)
  • Focusing (AREA)
  • Control Of Stepping Motors (AREA)
KR1020090004483A 2008-01-24 2009-01-20 초점 조절장치 및 그것을 이용한 광학 기기 KR100999906B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2008013326A JP5100412B2 (ja) 2008-01-24 2008-01-24 焦点調節装置及びそれを用いた光学機器
JPJP-P-2008-013326 2008-01-24

Publications (2)

Publication Number Publication Date
KR20090082118A KR20090082118A (ko) 2009-07-29
KR100999906B1 true KR100999906B1 (ko) 2010-12-13

Family

ID=40899335

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020090004483A KR100999906B1 (ko) 2008-01-24 2009-01-20 초점 조절장치 및 그것을 이용한 광학 기기

Country Status (4)

Country Link
US (1) US7801434B2 (ja)
JP (1) JP5100412B2 (ja)
KR (1) KR100999906B1 (ja)
CN (1) CN101493566B (ja)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5100400B2 (ja) * 2008-01-08 2012-12-19 キヤノン株式会社 焦点調節装置、それを用いた光学機器
US8126322B2 (en) * 2009-03-13 2012-02-28 Panasonic Corporation Interchangeable lens, camera body, and camera system
US8081874B2 (en) * 2009-03-13 2011-12-20 Panasonic Corporation Interchangeable lens and camera body
US8767119B2 (en) * 2009-03-13 2014-07-01 Panasonic Corporation Interchangeable lens, camera body, and camera system
JP5704810B2 (ja) * 2009-12-11 2015-04-22 キヤノン株式会社 撮像装置
JP2011154142A (ja) * 2010-01-27 2011-08-11 Sigma Corp 撮像装置
JP6145822B2 (ja) * 2012-10-12 2017-06-14 パナソニックＩｐマネジメント株式会社 撮像装置
US9288379B2 (en) * 2014-03-12 2016-03-15 Omnivision Technologies, Inc. System and method for continuous auto focus within camera module
KR102176284B1 (ko) * 2015-04-08 2020-11-09 삼성전기주식회사 디지털 촬영시스템 및 그 제어방법
US10574914B2 (en) 2017-10-27 2020-02-25 Semiconductor Components Industries, Llc Methods and apparatus for actuator control
CN111712182B (zh) * 2018-02-09 2023-07-14 爱尔康公司 用于激光扫描系统的系统反相控制器
CN110392200B (zh) * 2018-04-20 2021-01-26 杭州海康威视数字技术股份有限公司 自动聚焦的方法和装置
CN113437922B (zh) * 2021-07-27 2022-06-28 上海莘汭驱动技术有限公司 有限转角力矩电动机的驱动控制方法和系统

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2737945B2 (ja) * 1988-08-29 1998-04-08 ソニー株式会社 フォーカス制御装置
JPH03285467A (ja) * 1990-03-30 1991-12-16 Sharp Corp オートフォーカス装置
JPH0564056A (ja) 1991-08-30 1993-03-12 Canon Inc 合焦装置
JP2977979B2 (ja) * 1991-11-28 1999-11-15 キヤノン株式会社 自動焦点調節装置
JP3093057B2 (ja) * 1992-10-23 2000-10-03 京セラ株式会社 自動焦点検出装置
JP2912778B2 (ja) * 1992-11-20 1999-06-28 シャープ株式会社 オートフォーカス装置
KR0156128B1 (ko) 1994-02-16 1998-11-16 구자홍 렌즈 어셈블리
JPH1010413A (ja) * 1996-06-20 1998-01-16 Canon Inc 撮像装置
JPH1062679A (ja) * 1996-08-14 1998-03-06 Canon Inc 光学装置及びカメラ
JP4165915B2 (ja) 1996-09-20 2008-10-15 松下電器産業株式会社 ステッピングモータ制御装置
JP4006213B2 (ja) * 2001-10-18 2007-11-14 キヤノン株式会社 撮像装置及びその合焦制御方法、並びにプログラム
JP2003289469A (ja) * 2002-03-28 2003-10-10 Minolta Co Ltd 撮像装置
JP2006301032A (ja) * 2005-04-15 2006-11-02 Sony Corp オートフォーカス装置とオートフォーカス方法およびプログラム
JP2007108584A (ja) * 2005-10-17 2007-04-26 Fujifilm Corp 撮像装置及び制御プログラム
JP2007133277A (ja) * 2005-11-14 2007-05-31 Nidec Copal Corp デジタルカメラ用自動合焦装置
JP2007148249A (ja) * 2005-11-30 2007-06-14 Canon Inc 自動焦点調整装置
JP2008160900A (ja) * 2006-12-20 2008-07-10 Oki Data Corp ステッピングモータ制御装置および印刷装置

Also Published As

Publication number Publication date
JP2009175384A (ja) 2009-08-06
JP5100412B2 (ja) 2012-12-19
US7801434B2 (en) 2010-09-21
KR20090082118A (ko) 2009-07-29
CN101493566A (zh) 2009-07-29
US20090190910A1 (en) 2009-07-30
CN101493566B (zh) 2011-02-02

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